§ 138-102. Additional standards for limited local residential streets in new subdivisions.

(a)

Standards of construction for limited local residential streets in new subdivisions are as follows:

(1)

The width of the street as measured from face of curb to face of curb shall be 28 feet.

(2)

The pavement section shall meet the following minimum requirements:

a.

All natural ground under fill or base shall be scarified to a depth of not less than six inches and recompacted to 90 percent of maximum density at optimum moisture content as determined by the modified Proctor method in accordance with ASTM D-1557.

b.

The crushed aggregate base course shall conform to the requirements of the department of public works streets and sidewalk construction specification, January 1975, and the crushed aggregate base course shall be a minimum thickness of six inches.

c.

The asphalt concrete base and top shall conform to the requirements of the department of public works street and sidewalk construction specifications, January 1975, and the asphalt concrete base course and top course shall be a minimum total thickness of four inches.

(3)

The standards of the department of public works are amended to include a curb and gutter cross section having the dimensions of six inches thick by 24 inches wide with a curb six inches high, materials and workmanship conforming to the standards of the department of public works, subject to the following:

a.

Pending the adoption of a revised standard by the city, by the department of public works and, where applicable, the owner shall agree to install a modified grate and frame compatible with the reduced gutter width provided for in this section. The type, style, thickness, weight and other mechanical properties of such grate and frame, as well as modifications that may be required of existing standard basins permitted, shall be subject to the approval of the commissioner of public works or the commissioner's authorized agent.

(4)

On limited local residential streets in proposed new subdivisions, the owner shall agree to dedicate to the use of the public forever a nine-foot wide utility easement on either side and abutting the right-of-way of the limited local residential street, including around the bulb of any cul-de-sac which is a part thereof, the purpose of such dedication being to install traffic signs, fire hydrants, gas, water, sewer mains, related appurtenances and public sidewalks as provided for in this section. On all limited local residential streets, the sidewalk may be installed by petition of the abutting property owner or, when in the opinion of the commissioner of public works it is necessary, by any other means provided in this section.

(5)

On limited local residential streets and higher classification streets in proposed new subdivisions permitted under this section, the owner shall agree to install the full roadway prism in accordance with the standards of the department of public works and the governing sections of this Code or other ordinances of the city. The roadway cross section to be developed will extend from the right-of-way line or utility easement line to the right-of-way line or utility easement line, whichever distance is greater. Cuts and fills employed to construct the roadway prism to the limits specified shall be two feet horizontal to one foot vertical rise, which, in the case of cut slopes and at the discretion of the commissioner of public works for unusual difficulty or hardship, may be reduced to 11 feet horizontal to one foot vertical rise.

(6)

On limited local residential streets and higher classification streets in proposed new subdivisions permitted under this section, where such new or existing street has a proposed intersecting street or is a through street serving other subdivisions or areas and on looped limited local residential streets, the owner shall agree to install a minimum five-foot wide by four-inch thick concrete sidewalk, with the back of the sidewalk being located at the right-of-way line or at the most far removed utility easement line, whichever distance from the centerline of the street is greater, with the exception that the owner will not be required to install sidewalks around the bulb of the cul-de-sac of a proposed street classified as limited local residential.

(Code 1977, § 9-3097; Ord. No. 2001-22, § 1, 3-14-01)

Land Development Code References— Subdivision design standards, § 15-08.001 et seq.; required improvements in subdivisions, § 15-09.001 et seq.